Soulnote D-3 D/A Converter
This unit will not operate unless connected to a 10 MHz external clock generator like the X-3. The X-3 is sold separately.
ZERO LINK
Connecting a network transport equipped with ZERO LINK creates a network system that is completely synchronized with the DAC clock, achieving dramatic improvements in sound quality by eliminating asynchronous circuits. The input from the ZERO LINK terminals passes through a selector consisting of a mechanical relay that does not add jitter and connects directly to the DAC chip using a layout unique to ZERO LINK.
Specifications-----Soulnote Advantages
A dual monaural analog section
The D-3 utilizes a dual monaural construction that employs two identical and dedicated sets of terminals, Type-R circuits, power supply channels, power transformers, relay drive circuitry, and relay power supplies for the left and right channels. It is also fully separated from the digital power supply, including the transformer. A photocoupler completely separates the relay control signals that connect with the analog signal system. The mounting base for the aluminum circuit board is not fixed, laying the foundation for uninhibited and more impassioned sound quality. Analog circuit boards are mounted on independent right and left circuit board chassis and are also independent from the rear panel connectors. Similar to the P-3, foaming Teflon-covered cables connect the left and right independent side aluminium ground anchors to the respective aluminum ground anchors that are isolated from the chassis.
Type-R circuits are used inside the non-NFB balance amplifier
The output line amplifier uses Type-R discrete grade non-NFB balance circuits, similar to the P-3. It also includes the newly-developed super high-quality naked foil resistors. With 1Ω emitter resistors and 3.9Ω output resistance, it delivers astonishing information detail and S/N presence for superior power preamplifier drive capabilities.
Utilizes four ES9038PRO circuits
Each channel in the DAC chip uses two ES9038PRO chips, for a total of four in the unit. Each channel's incomparably powerful 120 mA current output is an essential element of the discrete non-NFB DAC. One current voltage conversion resistor uses naked foil resistors to convert current output into voltage directly before the first stage of the Type-R Circuit.
Femtosecond order DDS
With its extremely low jitter of 45 femtoseconds, the DDS LMX2594 gives rise to a high-quality master clock that aligns sampling frequencies from the 10 MHz clock input. As a result, it can drive the ES9038PRO in Non-DPLL mode (128 femtoseconds), i.e. the best sound quality mode. By generating a master clock that matches each track's sampling frequency transmitted from the transport during ZERO LINK, this achieves perfect synchronization with the transport without any use of PLLs or sampling rate converters.
The D-3 uses the highly acclaimed NOS (Non oversampling) mode. This mode does not generate the pre- and post-echoes observed in FIR oversampling. * Non oversampling mode cannot be used with DSD.
Impulse output waveform with an FIR oversampling filter
Pre- and post-echoes are artificial "sounds" created by data calculations before and after the data is interpolated. They make waveforms like sine waves appear smoother, but calculation algorithms can affect the sound quality or ambiguity and be added to the time-axis.
Impulse output waveform in Non oversampling mode
This waveform can only be achieved by combining a non-NFB discrete amplifier with superb transient response performance. Because music waveforms are actually a series of impulse waveforms of different heights, Non oversampling mode eliminates any ambiguity in the time axis information, creating a more realistic and natural sound quality and an expansive listening environment to the human ear, which is extremely sensitive to the time axis.
* Non oversampling mode cannot be used with DSD.
The power transformer is divided into three independent transformers – digital, analog right, and analog left – with each section mounted independently on the side of an aluminum base that convey any transformer vibrations from each base to a grounding spike. Each of the three transformers is mounted vertically in parallel with the circuit board to prevent possible noise interference in the circuits caused by leakage flux. A vital component of sound quality, the transformer base's sandwich structure features an aluminium side floated at three points by titanium spacers and employs optimum materials, structure, and shape to eliminate resonance and avoid dumps. The 152 low-magnification electrolytic capacitors in the rectifier capacitor and 52 ultra high-speed SiC diodes in the rectifier diode demonstrate our unwavering dedication to sound quality. They constitute the core of this massive power supply.
Power Design by Soulnote D–3
The current line-up Soulnote is based on new design concept.
(Reference SOULNOTE Relay)
Supported sampling frequency
ZERO LINK, USB: Max. 768kHz (PCM) / Max. 22.6MHz (DSD)
Coaxial, AES/EBU:
Max. 192kHz (PCM) / Max. 2.8MHz (DSD64 DoP v1.1)
PCM quantization bit rate
ZERO LINK, USB: 16bit, 24bit, 32bit
Coaxial, AES/EBU:
16bit, 24bit
Digital input
ZERO LINK, USB (Typ B) 2, coaxial (S/PDIF), AES/EBU
External clock input
10MHz (SMA 50ohms)
Analog output
XLR x1, RCA x1
Analog output level
XLR: 5,6Vrms
RCA: 2,8Vrms
Frequency characteristic
2Hz bis 120kHz (+0/-1dB）
S/N ratio
110dB
Total harmonic distortion
0,008％ (NOS/176,4kHz)
Analog filter
Primary passive type
Power voltage
230V AC 50Hz
Power consumption
48W
Maximum external dimensions
Main unit: 454(W) × 174(H) × 407(D)mm
Weight
28kg
Included accessories
Spike board, spikes, remote controller, power cable
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